1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
2 /* hack.dog.c - version 1.0.3 */
3 /* $FreeBSD: src/games/hack/hack.dog.c,v 1.3 1999/11/16 02:57:03 billf Exp $ */
4 /* $DragonFly: src/games/hack/hack.dog.c,v 1.2 2003/06/17 04:25:24 dillon Exp $ */
7 #include "hack.mfndpos.h"
8 extern struct monst *makemon();
10 #include "def.mkroom.h"
12 struct permonst li_dog =
13 { "little dog", 'd',2,18,6,1,6,sizeof(struct edog) };
15 { "dog", 'd',4,16,5,1,6,sizeof(struct edog) };
16 struct permonst la_dog =
17 { "large dog", 'd',6,15,4,2,4,sizeof(struct edog) };
21 struct monst *mtmp = makemon(&li_dog,u.ux,u.uy);
22 if(!mtmp) return; /* dogs were genocided */
26 initedog(mtmp) struct monst *mtmp; {
27 mtmp->mtame = mtmp->mpeaceful = 1;
28 EDOG(mtmp)->hungrytime = 1000 + moves;
29 EDOG(mtmp)->eattime = 0;
30 EDOG(mtmp)->droptime = 0;
31 EDOG(mtmp)->dropdist = 10000;
32 EDOG(mtmp)->apport = 10;
33 EDOG(mtmp)->whistletime = 0;
36 /* attach the monsters that went down (or up) together with @ */
37 struct monst *mydogs = 0;
38 struct monst *fallen_down = 0; /* monsters that fell through a trapdoor */
39 /* they will appear on the next level @ goes to, even if he goes up! */
49 while(mtmp = fallen_down){
50 fallen_down = mtmp->nmon;
59 for(mtmp = fmon; mtmp; mtmp = mtmp->nmon)
60 if(dist(mtmp->mx,mtmp->my) < 3 && follower(mtmp)
61 && !mtmp->msleep && !mtmp->mfroz) {
66 keepdogs(); /* we destroyed the link, so use recursion */
67 return; /* (admittedly somewhat primitive) */
71 fall_down(mtmp) struct monst *mtmp; {
73 mtmp->nmon = fallen_down;
79 /* return quality of food; the lower the better */
87 dogfood(obj) struct obj *obj; {
91 (obj->otyp == TRIPE_RATION) ? DOGFOOD :
92 (obj->otyp < CARROT) ? ACCFOOD :
93 (obj->otyp < CORPSE) ? MANFOOD :
94 (poisonous(obj) || obj->age + 50 <= moves ||
95 obj->otyp == DEAD_COCKATRICE)
99 if(!obj->cursed) return(APPORT);
100 /* fall into next case */
108 /* return 0 (no move), 1 (move) or 2 (dead) */
109 dog_move(mtmp, after) struct monst *mtmp; {
110 int nx,ny,omx,omy,appr,nearer,j;
111 int udist,chi,i,whappr;
113 struct permonst *mdat = mtmp->data;
114 struct edog *edog = EDOG(mtmp);
117 xchar cnt,chcnt,nix,niy;
119 xchar gx,gy,gtyp,otyp; /* current goal */
122 #define GDIST(x,y) ((x-gx)*(x-gx) + (y-gy)*(y-gy))
123 #define DDIST(x,y) ((x-omx)*(x-omx) + (y-omy)*(y-omy))
125 if(moves <= edog->eattime) return(0); /* dog is still eating */
128 whappr = (moves - EDOG(mtmp)->whistletime < 5);
129 if(moves > edog->hungrytime + 500 && !mtmp->mconf){
132 if(mtmp->mhp > mtmp->mhpmax)
133 mtmp->mhp = mtmp->mhpmax;
135 pline("%s is confused from hunger.", Monnam(mtmp));
136 else pline("You feel worried about %s.", monnam(mtmp));
138 if(moves > edog->hungrytime + 750 || mtmp->mhp < 1){
140 pline("%s dies from hunger.", Monnam(mtmp));
142 pline("You have a sad feeling for a moment, then it passes.");
146 dogroom = inroom(omx,omy);
147 uroom = inroom(u.ux,u.uy);
148 udist = dist(omx,omy);
150 /* maybe we tamed him while being swallowed --jgm */
151 if(!udist) return(0);
153 /* if we are carrying sth then we drop it (perhaps near @) */
154 /* Note: if apport == 1 then our behaviour is independent of udist */
156 if(!rn2(udist) || !rn2((int) edog->apport))
157 if(rn2(10) < edog->apport){
158 relobj(mtmp, (int) mtmp->minvis);
159 if(edog->apport > 1) edog->apport--;
160 edog->dropdist = udist; /* hpscdi!jon */
161 edog->droptime = moves;
164 if(obj = o_at(omx,omy)) if(!index("0_", obj->olet)){
165 if((otyp = dogfood(obj)) <= CADAVER){
170 if(obj->owt < 10*mtmp->data->mlevel)
171 if(rn2(20) < edog->apport+3)
172 if(rn2(udist) || !rn2((int) edog->apport)){
175 /* if(levl[omx][omy].scrsym == obj->olet)
182 /* first we look for food */
183 gtyp = UNDEF; /* no goal as yet */
185 gx = gy = 0; /* suppress 'used before set' message */
187 for(obj = fobj; obj; obj = obj->nobj) {
189 if(otyp > gtyp || otyp == UNDEF) continue;
190 if(inroom(obj->ox,obj->oy) != dogroom) continue;
192 (dogroom >= 0 || DDIST(obj->ox,obj->oy) < 10)) {
193 if(otyp < gtyp || (otyp == gtyp &&
194 DDIST(obj->ox,obj->oy) < DDIST(gx,gy))){
200 if(gtyp == UNDEF && dogroom >= 0 &&
202 !mtmp->minvent && edog->apport > rn2(8)){
209 (gtyp != DOGFOOD && gtyp != APPORT && moves < edog->hungrytime)){
210 if(dogroom < 0 || dogroom == uroom){
215 int tmp = rooms[dogroom].fdoor;
216 cnt = rooms[dogroom].doorct;
218 gx = gy = FAR; /* random, far away */
221 dist(doors[tmp].x, doors[tmp].y)){
227 /* here gx == FAR e.g. when dog is in a vault */
228 if(gx == FAR || (gx == omx && gy == omy)){
234 appr = (udist >= 9) ? 1 : (mtmp->mflee) ? -1 : 0;
235 if(after && udist <= 4 && gx == u.ux && gy == u.uy)
238 if(!IS_ROOM(levl[u.ux][u.uy].typ) || !rn2(4) ||
240 (mtmp->minvent && rn2((int) edog->apport)))
243 /* if you have dog food he'll follow you more closely */
247 if(obj->otyp == TRIPE_RATION){
254 } else appr = 1; /* gtyp != UNDEF */
255 if(mtmp->mconf) appr = 0;
257 if(gx == u.ux && gy == u.uy && (dogroom != uroom || dogroom < 0)){
258 extern coord *gettrack();
260 cp = gettrack(omx,omy);
269 cnt = mfndpos(mtmp,poss,info,ALLOW_M | ALLOW_TRAPS);
272 for(i=0; i<cnt; i++){
275 if(info[i] & ALLOW_M){
277 if(mtmp2->data->mlevel >= mdat->mlevel+2 ||
278 mtmp2->data->mlet == 'c')
280 if(after) return(0); /* hit only once each move */
282 if(hitmm(mtmp, mtmp2) == 1 && rn2(4) &&
283 mtmp2->mlstmv != moves &&
284 hitmm(mtmp2,mtmp) == 2) return(2);
288 /* dog avoids traps */
289 /* but perhaps we have to pass a trap in order to follow @ */
290 if((info[i] & ALLOW_TRAPS) && (trap = t_at(nx,ny))){
291 if(!trap->tseen && rn2(40)) continue;
292 if(rn2(10)) continue;
295 /* dog eschewes cursed objects */
296 /* but likes dog food */
299 if(obj->ox != nx || obj->oy != ny)
301 if(obj->cursed) goto nxti;
302 if(obj->olet == FOOD_SYM &&
303 (otyp = dogfood(obj)) < MANFOOD &&
304 (otyp < ACCFOOD || edog->hungrytime <= moves)){
305 /* Note: our dog likes the food so much that he
306 might eat it even when it conceals a cursed object */
312 moves + obj->quan * objects[obj->otyp].oc_delay;
313 if(edog->hungrytime < moves)
314 edog->hungrytime = moves;
316 5*obj->quan * objects[obj->otyp].nutrition;
319 pline("%s ate %s.", Monnam(mtmp), doname(obj));
320 /* perhaps this was a reward */
322 edog->apport += 200/(edog->dropdist+moves-edog->droptime);
330 for(j=0; j<MTSZ && j<cnt-1; j++)
331 if(nx == mtmp->mtrack[j].x && ny == mtmp->mtrack[j].y)
332 if(rn2(4*(cnt-j))) goto nxti;
334 /* Some stupid C compilers cannot compute the whole expression at once. */
335 nearer = GDIST(nx,ny);
336 nearer -= GDIST(nix,niy);
338 if((nearer == 0 && !rn2(++chcnt)) || nearer<0 ||
339 (nearer > 0 && !whappr &&
340 ((omx == nix && omy == niy && !rn2(3))
345 if(nearer < 0) chcnt = 0;
351 if(nix != omx || niy != omy){
352 if(info[chi] & ALLOW_U){
353 (void) hitu(mtmp, d(mdat->damn, mdat->damd)+1);
358 for(j=MTSZ-1; j>0; j--) mtmp->mtrack[j] = mtmp->mtrack[j-1];
359 mtmp->mtrack[0].x = omx;
360 mtmp->mtrack[0].y = omy;
362 if(mintrap(mtmp) == 2) /* he died */
368 /* return roomnumber or -1 */
369 inroom(x,y) xchar x,y; {
371 struct mkroom *croom = &rooms[0];
372 while(croom->hx >= 0){
373 if(croom->hx >= x-1 && croom->lx <= x+1 &&
374 croom->hy >= y-1 && croom->ly <= y+1)
375 return(croom - rooms);
379 return(-1); /* not in room or on door */
388 if(flags.moonphase == FULL_MOON && night() && rn2(6))
391 /* If we cannot tame him, at least he's no longer afraid. */
394 if(mtmp->mtame || mtmp->mfroz ||
398 mtmp->isshk || mtmp->isgd || index(" &@12", mtmp->data->mlet))
399 return(0); /* no tame long worms? */
401 if(dogfood(obj) >= MANFOOD) return(0);
402 if(cansee(mtmp->mx,mtmp->my)){
403 pline("%s devours the %s.", Monnam(mtmp),
404 objects[obj->otyp].oc_name);
406 obfree(obj, (struct obj *) 0);
408 mtmp2 = newmonst(sizeof(struct edog) + mtmp->mnamelth);
410 mtmp2->mxlth = sizeof(struct edog);
411 if(mtmp->mnamelth) (void) strcpy(NAME(mtmp2), NAME(mtmp));